module TclTime where
import TclCompatibility
import Char

-- get the time in milliseconds
-- this uses the system dependent clock clicks function
-- I don't yet know a better way to do this.

-- under NT this gives time in milliseconds

getTclTime :: IO Int
getTclTime = do secs <- primExecuteTcl "clock clicks"
                return $ (parseInt secs)


-- ParseInt ----------------------------------------------
 
parseInt :: String -> Int
parseInt s =
	case s of
	  ' ':xs -> parseInt xs
	  '+':xs -> parseInt xs
	  '-':xs -> - (parseInt xs)
	  xs     -> parseInt' xs
      where
	parseInt' = foldl (\n x -> 10 * n + ((ord x) - ord '0')) 0